1. UK Biochar Research Centre; School of GeoSciences, Univ. of Edinburgh; Edinburgh EH9 3JN
2. Scottish Environmental Technology Network; Univ. of Strathclyde; Glasgow G1 1XW
3. School of Geosciences, Univ. of Edinburgh; High School Yards Edinburgh EH8 9XP
4. Rothamsted Research; Dep. of Sustainable Soils and Grassland Systems; Harpenden AL5 2JQ